Home / 405,144.81-559,126.17-223,856.76

Finding the Fourth Proportional to 405,144.81, 559,126.17 and 223,856.76

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Solution

The fourth proportional to 405,144.81, 559,126.17 and 223,856.76 is: 308,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,144.81 : 559,126.17 = 223,856.76 : x
  2. Step 2: Convert to fraction form
    405,144.81/559,126.17 = 223,856.76/x
  3. Step 3: Cross multiply
    405,144.81x = 559,126.17 × 223,856.76
  4. Step 4: Simplify right side
    405,144.81x = 125,164,172,847.41
  5. Step 5: Solve for x
    x = 125,164,172,847.41/405,144.81
  6. Step 6: Final answer
    x = 308,936.88

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.